Please do not take light-curing for granted!Lower light intensity may cause insufficient adhesion of bonding material, poor polymerization of resin-based composite which may result in fracture, micro-leakage, sensitivity, and recurrent caries, unable to resist wear in function, unable to be polished, unable to maintain their luster and color.Choose a high-energy output curing light to improve Clinical Results through Light-Curing! A high light-energy device in hand is the key to ensure the quality and durability of the restorations when light-curing resin adhesives, resin-based composites, resin cements, and other light-activated restorative materials.Advantage of Rolence curing light - Elitedent Q-4:- 1,400 mW/cm2 light intensity output; light energy rarely declines.- 5 seconds can cure a 2-mm-thick resin composite specimen, - Autoclavable Curing tip rotates 360°for curing at any position of mouth, - Versatile fiber optic curing tip optional,- Digital timer display, multiple mode selection, - Two button easy operation, - Quiet operation, fan-free design,- Can be used both cordless and corded, - Rechargeable lithium battery inside supports at least 200 cycles 10 second exposure when being fully charged - Slim and ergonomic handpiece for most comfortable hand-holding.